The invention discloses an automatic balancing magnetic suspension rotor system based on displacement stiffness force lead compensation. The automatic balancing magnetic suspension rotor system comprises an automatic balancing module, a stabilization controller, a magnetic bearing power amplifier, an electromagnet rotor and a displacement sensor, wherein the automatic balancing module comprises a generalized wave trap and a lead compensator; the generalized wave trap extracts unbalanced information in a rotor displacement signal; and the lead compensator performs lead feed-forward compensation.. Automatic balancing control is introduced on the basis of stabilization control of the magnetic suspension rotor, a simplified inverse model of the power amplifier is constructed based on the frequency characteristics of the magnetic bearing power amplifier, the influence of the low-pass characteristics of the power amplifier on the displacement stiffness force compensation precision is eliminated, the common-frequency bearing force is greatly reduced, and the automatic balancing precision of the magnetic suspension rotor is obviously improved. The automatic balancing magnetic suspension rotor system based on the displacement stiffness force lead compensation is simple and practicable and is particularly suitable for an actual magnetic suspension rotor system.